During the Rogers Rebellion in Scotland in 1040, England's 20 year-old Prince James is lured to a tower of the Castle of Solway Firth and slain by assassins. Because his destiny was thwarted by human intervention, James' spirit is not allowed to rest. Trapped in the castle, he kills those who slew him, then does little else for centuries afterwards.
Finally in 1940, with the onset of the war, the British dismantle his castle and ship it to the United States for safekeeping. However, the vessel carrying the castle is sunk by an enemy submarine, thus freeing James' spirit. Making his way to the U.S., James comes to be known as Mr. Justice, using powers derived from "the spectral planes" to protect others from the kind of foul play that ended his natural life.
Among Mr. Justice's powers are flight, the ability to travel freely underwater, and the capacity to generate forces which blast apart souls and bodies alike. Mr. Justice can travel about as a hazy blob of ectoplasm or as a corporeal being, but in this form is then vulnerable to fire.
He is a member of The Terrific Three.
In Blue Ribbon Comics #9, it is clearly stated by a tour guide that the murder of Prince James occurred exactly "200 years" before the day of the tour, making his death around 1740. In Blue Ribbon Comics #22 the date is specifically listed as 1040.
Since the time is associated with the "Rogers Rebellion", it is presumed that the uprising occurred around the time of the Jacobite rising of 1746.
If the 1040 year is accurate, it would frame it around the time of the ascension to the throne by Edward the Confessor in 1042. Judging from the armor type in the stories, it seems that 1040 is a more likely date, yet the history of Scotland did not have a great deal of large castle properties in the 11th century. It seems likely that the property possessed a military history and a residency, yet the castle itself was not constructed until 1540. This would align the circa 1740 rebellion with the true date. The year 1040 seems to be an error.